Thanks for the swift response! Let's see if I can sink that minelayer

Just to elaborate, would you say it was true then that:
Visual checking + Stadimeter + U-jagd is preferable when it's good weather (as it's much faster).
Four bearings is preferable when it's bad weather?
And last question (for now :p). Let's say the hydrophone picks up on three ships. One of which is a merchant, but it's not the closest ship. How can I make sure he keeps following the merchant? As far as I can see, I can either choose follow closest or follow warship.
Thanks once again, really appreciate it!